During this period, Peńanac formed close ties with the far-right Yugoslav Radical Union government of Milan Stojadinoviń, in April 1941 the Germans, Italians and Hungarians invaded Yugoslavia leading to the swift collapse of the Yugoslav state and the surrender of the Yugoslav army. Repubblica Socialista Federale di Jugoslavia ‚ Covering an area of 255,804 km¬, the SFRY was bordered with Italy to the west, Hungary to the north, Bulgaria and Romania to the east and Albania and Greece to the south.]